Construction and Analysis of Data Security System for Changes in Physical Fitness of College Students

Introduction: With the accelerated pace of modern life, sub-health has gradually become a threat to the health of contemporary people. In the busy life, people not only have their physical conditions, but also their moral cultivation and ideal pursuit in their spiritual life are gradually indifferent. Objectives: This study aims to investigate the training methods of national traditional sports under the model of combination of sports and medicine. Methods: 217 college students, including 60 boys and 157 girls. The subjects were divided into two groups. The experimental group used traditional ethnic sports. The control group did not take traditional ethnic sports. Functional indicators (pulse, systolic blood pressure, diastolic blood pressure and swelling volume at rest), quality indicators (pull up, sit up, standing long jump, 50m, 800m and 1000m) and derived indicators (body mass index, vital capacity body mass index, Vilvik index and Bellak index) and other indicators of body shape, physiological function and sports skills are measured after one week. Results: The experimental data shows that after a year of traditional national sports practice, the students' pull up (male) and sit up (female) performances have improved to a certain extent, while the standing long jump, 50 meters, 800 meters (female), 1000 meters (male) and other performances have improved significantly, especially in long-distance running. This not only proves that national traditional sports can significantly promote the overall function of the human body, but also indicates that national traditional sports can improve the sports skills and physical flexibility of the human body. Conclusions: After a year of national traditional sports training, the physical morphology, physiology and sports indicators of 217 non sports major college students before and after the training were sorted out and analyzed. The experimental results show that the national traditional sports make the body shape of college students tend to be normal, the cardiorespiratory function is significantly strengthened, and the physical flexibility and sports function are significantly improved, which has a significant impact on the physical function quality of college students.